DTSUsageType DTSUsageType DTSUsageType Enum

Definition

Indicates how an IDTSInputColumn100 object is used by a component.

public enum class DTSUsageType
public enum DTSUsageType
Public Enum DTSUsageType
Inheritance
DTSUsageTypeDTSUsageTypeDTSUsageType

Fields

UT_IGNORED UT_IGNORED UT_IGNORED 2

The column is ignored by the component.

UT_READONLY UT_READONLY UT_READONLY 0

The component will read the values of an input column, but will not modify them.

UT_READWRITE UT_READWRITE UT_READWRITE 1

The component will read and write to the column data.

Remarks

This enumeration contains values that indicate how a component will use an IDTSInputColumn100 object.

Components validate that each column in their IDTSInputColumnCollection100 has its UsageType property set correctly.

For example, if a component needs read/write permission to an input column and the column's UsageType property is set to UT_READONLY, it should post a DTS_E_CANTSETUSAGETYPE message and return a failure result from Validate.

Applies to